help with creative writing?

Hi
I'm thinking of writing a story based on an old sitcom. Can i float my idea past you guys and get your opinion on it?
I'm trying to write a story set in the world of the sixties sitcom "My Three Sons". I'm planning to explore what would happen if Robbie, Chip and Ernie were magically turned into girls, especially if it were just before the California-set years (as opposed to the Bryant Park-set years) - I can just imagine Chip getting excited about California but forgetting his transformed body - "Sun, sand, bikini girls - wait, I don't want to wear a bikini!".

On the one hand, the new girls won't want to be asked out by anyone they know, but, on the other hand, they'll be aware of how girls are treated in the California beach culture.